Air guide structure of dry-type transformer

Abstract

The utility model discloses an air guide structure of a dry-type transformer, which is arranged on an insulating cylinder of the dry-type transformer to seal channels on adjacent sides of the insulating cylinder, and comprises a clamping piece and a sealing piece, and the clamping piece comprises a connecting part and a clamping part capable of clamping the insulating cylinder; the sealing piece can be detachably connected to any side of the connecting part. The air guide structure of the dry-type transformer comprises the clamping piece and the sealing piece, the structure is simple, operation is convenient, the sealing piece is detachably connected to any side of the clamping piece, a channel on any side of an insulating cylinder can be blocked, and a plurality of air guide structures of the dry-type transformer are used in a combined mode and arranged in the circumferential direction of the insulating cylinder. The channel on any side of the insulating cylinder can be sealed according to needs, and heat dissipation air entering the sealed channel is reduced, so that the heat dissipation air is guided to a position with higher temperature, and the cooling of the dry-type transformer is accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to dry -type transformer technical field especially relates to a dry -type transformer air -guide structure. BACKGROUND

[0002] Dry -type transformer refers to the iron core and winding do not impregnate in the transformer of insulating oil, has the characteristics such as maintenance -free, flame -retardant, small volume, is widely used in local lighting, high -rise building, airport, wharf CNC mechanical equipment etc.

[0003] Insulating cylinder is an important component of dry -type transformer, during the assembly process of transformer, insulating cylinder is located between the high -voltage winding and low -voltage winding of transformer, constitutes the insulating layer between inner and outer winding, can increase the safety distance of inner and outer winding, increases electrical insulation.

[0004] Dry -type transformer in the working process, high -voltage coil and low -voltage coil will produce heat, heat if not in time to send out, will produce the temperature rise exceeding limit, and will burn the transformer, usually installs the cooling fan under the core and coil of dry -type transformer, carries out forced air cooling heat dissipation to the coil of dry -type transformer, but there is the problem of unbalanced heat dissipation.

[0005] Therefore, how to design a dry -type transformer air -guide structure, the air -cooling air is guided, the air -cooling air is guided to the position of higher temperature, accelerates the cooling of dry -type transformer, is the technical problem that the present technical personnel in the field need to solve. UTILITY MODEL CONTENT

[0006] Therefore, the utility model provides a dry -type transformer air -guide structure, the air -cooling air is guided, the air -cooling air is guided to the position of higher temperature, accelerates the cooling of dry -type transformer.

[0007] In order to realize the above -mentioned purpose, the utility model provides the following technical scheme:

[0008] A dry -type transformer air -guide structure is arranged on the insulating cylinder of dry -type transformer to seal the adjacent side passageway of insulating cylinder, and the dry -type transformer air -guide structure comprises:

[0009] The clamping part comprises a connecting part and a clamping part capable of clamping the insulating cylinder;

[0010] The sealing part can be detachably connected to any one side of the connecting part.

[0011] Optionally, in the above -mentioned dry -type transformer air -guide structure, the two sides of the connecting part are provided with clamping ends, and the sealing part is provided with a clamping part matched with the clamping end.

[0012] Optionally, in the air guide structure of the dry-type transformer, the sealing member comprises a central protrusion and side protrusions located on both sides of the central protrusion, and a groove is formed between the central protrusion and the side protrusions.

[0013] Optionally, in the air guide structure of the dry-type transformer, the clamping end comprises a clamping groove and an insertion portion located outside the clamping groove, and the clamping portion comprises a side protrusion and a groove, the side protrusion being matched with the clamping groove, and the insertion portion being matched with the groove.

[0014] Optionally, in the air guide structure of the dry-type transformer, the two side protrusions are symmetrically distributed on both sides of the central protrusion, and the clamping ends located on both sides of the connecting portion are symmetrically arranged along the axis of the connecting portion.

[0015] Optionally, in the air guide structure of the dry-type transformer, the height of the central protrusion is greater than the height of the side protrusion.

[0016] Optionally, in the air guide structure of the dry-type transformer, when the clamping portion is inserted into the clamping end, the upper surface of the central protrusion is located on the same plane as the upper surface of the connecting portion.

[0017] Optionally, in the air guide structure of the dry-type transformer, the side surface of the groove is a straight surface or an inclined surface, and the insertion portion has an insertion surface matched with the groove.

[0018] Optionally, in the air guide structure of the dry-type transformer, the clamping portion comprises two clamping arms symmetrically arranged, and the clamping arms are obliquely arranged and inclined from a position close to the center of the insulating cylinder to a position away from the center of the insulating cylinder.

[0019] Optionally, in the air guide structure of the dry-type transformer, the material of the clamping member and the sealing member is silica gel.

[0020] The air guide structure of the dry-type transformer comprises a clamping member and a sealing member, is simple in structure and convenient to operate, and the sealing member is detachably connected to any side of the clamping member, so that the passage on any side of the insulating cylinder can be sealed, a plurality of air guide structures of the dry-type transformer are combined for use and arranged along the circumference of the insulating cylinder, the passage on any side of the insulating cylinder can be sealed as required, the heat dissipation air entering the sealed passage is reduced, and the heat dissipation air is guided to a position with a higher temperature, so that the cooling of the dry-type transformer is accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings required to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0022] Figure 1 This is a front view of the air guide structure of the dry-type transformer disclosed in an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the air guide structure of the dry-type transformer disclosed in an embodiment of the present utility model;

[0024] Figure 3 A front view of the clamping member disclosed in an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping member disclosed in an embodiment of the present utility model;

[0026] Figure 5 A front view of a seal disclosed in an embodiment of the present utility model;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the sealing member disclosed in an embodiment of the present utility model.

[0028] Figures 1-6 The meanings of the reference numerals in the figure are as follows:

[0029] 101 is a clamping member, 1011 is a connecting portion, 1012 is a clamping portion, and 102 is a sealing member. DETAILED DESCRIPTION

[0030] The core of the utility model is to provide an air guide structure for a dry-type transformer, which guides the heat-dissipating air so that the heat-dissipating air is guided to a position with a higher temperature, thereby accelerating the cooling of the dry-type transformer.

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] like Figures 1-2 As shown, an embodiment of the present utility model discloses an air guide structure for a dry-type transformer, including a clamping member 101 and a sealing member 102 .

[0033] It should be noted that the dry-type transformer includes a core, a low-voltage coil, an insulating cylinder, a high-voltage coil, a shell and a cooling device, wherein the cooling device is arranged at the lower part of the core and the coil. The insulating cylinder is located between the high-voltage coil and the low-voltage coil of the transformer, and forms an insulating layer between the inner and outer coils, which can increase the safety distance of the inner and outer coils and increase the electrical insulation. There is a gap between the insulating cylinder and the high-voltage coil and the low-voltage coil, which is the channel described in the application. The insulating cylinder can be a single-layer insulating cylinder or a double-layer insulating cylinder. If it is a double-layer insulating cylinder, the gap between the two layers of the insulating cylinder is also the channel described in the application. The air guide structure of the dry-type transformer disclosed in the utility model is used to seal the channels adjacent to the sides of the insulating cylinder, so as to achieve the purpose of guiding the heat dissipation air to the position with higher temperature and accelerate cooling.

[0034] The clamping part 101 includes a connecting part 1011 and a clamping part 1012 capable of clamping the insulating cylinder. It should be noted that the clamping part 1012 is clamped to the end of the insulating cylinder (the insulating cylinder is a cylindrical structure), and can be clamped to any end of the insulating cylinder according to actual needs. The sealing part 102 can be detachably connected to any side of the connecting part 1011, and the specific connection mode is not limited. The detachable connection facilitates disassembly and assembly.

[0035] When the insulating cylinder is single-layer, if it is necessary to seal the single-side channel of the insulating cylinder, such as the channel between the sealing insulating cylinder and the high-voltage coil, at this time, the gap between the outer wall of the insulating cylinder and the inner wall of the high-voltage coil is the above-mentioned channel. In use, first, one sealing part 102 is connected with one clamping part 101, then the clamping part 101 is clamped to any end of the insulating cylinder, for example, the lower end of the insulating cylinder, the clamping part 101 is clamped between the inner wall and the outer wall of the insulating cylinder, and the sealing part 102 is located at the position of the above-mentioned channel, that is, the gap between the outer wall of the insulating cylinder and the inner wall of the high-voltage coil is blocked. In order to seal the channel as a whole, a week of the air guide structure is arranged on the circumference of the insulating cylinder to seal the above-mentioned channel. After the channel is sealed, the heat dissipation air flowing through the channel is reduced, so that the heat dissipation air is guided to the position with higher temperature to accelerate the heat dissipation of the dry-type transformer.

[0036] When it is necessary to seal the two-side channels of the insulating cylinder, one clamping part 101 and two sealing parts 102 can be selected, the two sealing parts 102 are connected to the two sides of the clamping part 101 respectively, and the clamping part 101 is clamped to the end of the insulating cylinder and arranged in the circumferential direction to seal the channels on both sides of the insulating cylinder.

[0037] When the insulation cylinder is double-layered, two clamping members 101 and one sealing member 102 or two or three sealing members 102 can be used in combination to seal the passages between the insulation cylinders, or the passages between the insulation cylinder and the low-voltage coil or the high-voltage coil.

[0038] It should be noted that the dry-type transformer needs to be provided with a pad during assembly to prevent the coil of the dry-type transformer from vibrating and to protect the operation of the transformer. The air guide structure of the dry-type transformer disclosed in the utility model can be appropriately adjusted according to the position of the pad to form a combined sealing air guide system composed of the insulation cylinder, the air guide structure of the dry-type transformer and the upper and lower pads. In order to ensure that the air guide structure of the dry-type transformer can be well sealed at the joint with the adjacent pad during installation of the dry-type transformer, the end portion of the air guide structure of the dry-type transformer can be cut according to requirements, for example, can be cut into a fan shape.

[0039] The air guide structure of the dry-type transformer disclosed in the utility model embodiment is simple in structure, convenient to operate, can be used immediately after installation, can guide the cooling air, guide the cooling air to a position with a higher temperature, accelerate cooling, reduce the waste caused by the disordered flow of air volume, change the path of the cooling air, can distribute the air volume, and thus reduce the operating temperature of the dry-type transformer.

[0040] As shown in Figures 3-4 In a specific embodiment of the utility model, the two sides of the connecting portion 1011 are provided with clamping ends, and the sealing member 102 is provided with clamping portions matched with the clamping ends.

[0041] As shown in Figures 5-6 Specifically, the sealing member 102 includes a central protrusion and side protrusions located on both sides of the central protrusion, and a groove is formed between the central protrusion and the side protrusions, that is, the sealing member 102 has a mountain-shaped structure as a whole. For the convenience of description, the side protrusion located on the left side of the central protrusion is defined as the left side protrusion, the first groove is formed between the central protrusion and the left side protrusion, and the right side protrusion is located on the right side of the central protrusion, and the second groove is formed between the central protrusion and the right side protrusion.

[0042] The clamping end includes a clamping groove and an insertion portion located outside the clamping groove, and the connecting portion 1011 has a mountain-shaped structure as a whole. The clamping portion includes a side protrusion and a groove, and the side protrusion is matched with the clamping groove, and the insertion portion is matched with the groove. Specifically, the left side protrusion is matched with the right side clamping groove, the first groove is matched with the right side insertion portion, the right side protrusion is matched with the left side clamping groove, and the second groove is matched with the left side insertion portion. During connection, the clamping portion is inserted into the clamping end, so as to realize the mutual embedding of the two, and the mountain-shaped structure can ensure the stability and firmness of the clamping of the two.

[0043] On the basis of the above embodiment, as shown in Figures 5-6 Two side protrusions of the sealing member 102 are symmetrically distributed on both sides of the center protrusion, and correspondingly, the clamping ends on both sides of the connecting portion 1011 are symmetrically arranged along the axis of the connecting portion 1011. The height of the center protrusion of the sealing member 102 is greater than the height of the side protrusion.

[0044] In a specific embodiment of the present application, when the clamping portion is inserted into the clamping end, the upper surface of the center protrusion of the sealing member 102 is located on the same plane as the upper surface of the connecting portion 1011. In the combination, one of the sealing member 102 and the connecting portion 1011 is an inverted mountain-shaped structure, and the other is a positive mountain-shaped structure, and the two are clamped and matched.

[0045] As shown in Figure 6 In a specific embodiment of the present application, the center protrusion and the side protrusion of the sealing member 102 are both cuboid structures, and the insertion portion of the connecting portion 1011 is also a cuboid structure, that is, the side surfaces of the groove and the clamping groove are straight surfaces at this time. The side surfaces of the groove and the clamping groove can also be inclined surfaces, as long as the side surfaces of the corresponding insertion portion and the corresponding side protrusion are also inclined surfaces, and the two can be firmly connected when they are inserted and matched.

[0046] As shown in Figures 3-4 The dry-type transformer air guide structure disclosed in the embodiment of the present application, the clamping portion 1012 includes two clamping arms, and the clamping arms are arranged obliquely from the center position close to the insulating cylinder to the center position away from the insulating cylinder. Figures 3-4 As shown in The clamping arms are inclined from the lower to the upper direction, that is, the clamping portion 1011 has a structure of being wide at the top and narrow at the bottom. This design can ensure that the clamping member 101 can better clamp the insulating cylinder.

[0047] In order to make the clamping member 101 and the sealing member 102 have better resilience, and at the same time have high temperature resistance and good insulation performance, the dry-type transformer air guide structure disclosed in the embodiment of the present application, the material of the clamping member 101 and the sealing member 102 is silica gel material, which can meet the requirements of long-term operation of the dry-type transformer.

[0048] In order to adapt to insulating cylinders of different diameters, the hardness, elasticity of the sealing member 102 and the clamping member 101 are different, the material of the sealing member 102 is softer and has certain stretchability, and the sealing structure is suitable for dry-type transformers with different installation spacings.

[0049] The dry-type transformer air guide structure disclosed in the embodiment of the present application, the clamping member 101 is an integral structure.

[0050] It should be noted that each of the embodiments in the present specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between embodiments can be mutually referred to.

[0051] As shown in the present application and claims, unless the context clearly indicates otherwise, "one", "a", "an", and / or "the" do not refer to the singular, but can also include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of the steps and elements explicitly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements. The element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, product or device comprising the element.

[0052] Hereinafter, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features.

[0053] The principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the core idea of the present application. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the principles of the present application, the present application can be improved and modified in several ways. These improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A dry-type transformer air guide structure provided on an insulation cylinder of a dry-type transformer to seal a passage of adjacent sides of the insulation cylinder, characterized in that, The dry-type transformer air guide structure comprises: a clamping piece (101) comprising a connecting portion (1011) and a clamping portion (1012) capable of clamping the insulating cylinder; a sealing piece (102) capable of being detachably connected to any side of the connecting portion (1011).

2. The dry-type transformer air guide structure according to claim 1, wherein Both sides of the connecting portion (1011) are provided with clamping ends, and the sealing piece (102) is provided with clamping portions matched with the clamping ends.

3. The dry-type transformer air guide structure according to claim 2, wherein The sealing piece (102) comprises a central protrusion and side protrusions located on both sides of the central protrusion, and a groove is formed between the central protrusion and the side protrusions.

4. The dry-type transformer air guide structure according to claim 3, wherein The clamping end comprises a clamping groove and an insertion portion located outside the clamping groove, the clamping portion comprises the side protrusions and the groove, the side protrusions are matched with the clamping groove, and the insertion portion is matched with the groove.

5. The dry-type transformer air guide structure according to claim 4, wherein The two side protrusions are symmetrically distributed on both sides of the central protrusion, and the clamping ends located on both sides of the connecting portion (1011) are symmetrically arranged along the axis of the connecting portion (1011).

6. The dry-type transformer air guide structure according to claim 5, wherein The height of the central protrusion is greater than that of the side protrusions.

7. The dry-type transformer air guide structure according to claim 6, wherein When the clamping portion is inserted into the clamping end, the upper surface of the central protrusion is located on the same plane as the upper surface of the connecting portion (1011).

8. The dry-type transformer air guide structure according to claim 4, wherein The side surface of the groove is a straight surface or an inclined surface, and the insertion portion has an insertion surface matched with the groove.

9. The dry-type transformer air guide structure according to any one of claims 1 to 8, characterized in that, The clamping portion (1012) comprises two clamping arms symmetrically arranged, the clamping arms are inclinedly arranged, and are inclined from the central position close to the insulating cylinder to the central position away from the insulating cylinder.

10. The dry-type transformer air guide structure according to claim 9, wherein The materials of the clamping piece (101) and the sealing piece (102) are both silica gel materials.

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